The first release of Heroes & Villians General Grievous (9 of 12) had the #36 Explodo-Grievous figure (which was not the figure shown on the card back):

The second release of Heroes & Villians General Grievous (9 of 12), which is now shipping with the Greatest Battles Figures, has the #9 4-Armed Grievous figure (which is the figure shown on the card back):

I've seen the filled-in-hand version of the Sandtrooper as well Brent, I think it's a common (or semi-common) error with this figure...

Also a weird little thing I got in the mail recently from Slothus... He sent me some Sandtroopers he'd picked up extra, and the one's pack has a lot of bronze-ish or gold-ish translucent paint on the backpack for weathering. It's the only one I have with this paint on the pack out of like well over 10 Sandtroopers (I haven't done a headcount but it's a lot now).

It's weird and very noticeable especially compared to other ST backpacks. Very odd.